Gutter-head



No. 6|4,77|. Patented Nov. 22, |898. S. J. SHIMER..

` CUTTER HEAD.

(Applinatonled Aug. 19, 1898.)

(No Model.) ZSheet's--Sheet I.

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GUTTER HEAD.

(Application filed Aug. 19, 1898..) (No Model.) 2 Sheets-Sheet 2.

NIT/ED STATES PATENT Price.

SAMUEL J. SIIIMER, OF MILTON, PENNSYLVANIA;

GUTTER-HEAD.

sPEoIFIcA'rIoN forming part of Letters Patent No. 614,771, datedNovemior 22, 1898.

Application tiled August 19, 1898. Serial No. 689,023. (No model.)

To @ZZ whom. it may concern: Y

Beit known that I, SAMUEL J. SHIMER, a citizen of the United States,residing at Milton, in the county of Northumberland and State ofPennsylvania, have invented new and useful Improvements in Cutter-Heads,of which the following is a specification.

My invention relates to rotatable cutterheads for woodworking-machinesfor making doors, bed-rails, sash, and other objects or articles, whichheads are provided with circular bits, which work with side clearance inthe cut made and which are alternately arranged on opposite sides of theiiange or flanges of the head. Y

These cutter-heads as ordinarily constructed are provided withbit-seats, which incline either forwardly or rearwardly in theirrelative positions upon the plane of rotation to cause the bits securedthereto to incline toward or away from the centerline of the cut to workthe bits with the proper clearance for their sides back of their cuttingedges. With the bit-seats so constructed the head can only rotate in onedirection to perform its workthat is to say, the bits cannot be reversedand the head rotated in the opposite direction to cut a groove ormolding.

The object of my invention `is to provide an improved construction ofcutter head in which the bits can be reversed and the head rotated inthe opposite direction and also to provide said head with a two-part bitsecured to the head by a single holding-bolt about one common center onthe same side of the head-flange, the division of the bit being on thedividing-line between the groove made in the work and the adjacentmolded portion, thus making asaving in the cost of construction of thebit and in the material employed.

The invention consists in the novel construction and combination ofparts hereinafter fully described and claimed.

In the accompanying drawings, Figure 1 is a perspective view of what isknown as an eX- panding7 cutter-head constructed in accordance with myinvention. Fig. 2 is a central longitudinal section of the same. Fig. 3is a detail perspective view showing the outwardly-inclined bit-seat,the cutter or bit being removed. Fig. 4 is a detail elevation.

- side of the outer part or section.

Fig. 5 is a perspective view showing the twopart bit.

In the said drawings the reference-letters A and B designate theupper-and lower sections, respectively, of the cutter-head, providedwith flanges 1 and 2. The said anges are formed with circular recesses4in the inner sides or faces, in which iit sockets 5, and in thesesockets are seated coiled springs 6. The numerals 7 and 8 designate,respectively, the hubs of said sections, and 9 the expanding ring.

The part-s so far described may be of any ordinary orsuitableconstruction and in themselves form no part of the present invention.

The numeral 10 designates the bit-seats formed in the outer faces orsides of the lianges and are alternately arranged with respect to eachother. These seats slope or are inclined outwardly upon a radial line incontradistinction to seats which are inclined forwardly or rearwardlywith respect to the plane of rotation of the head--that is to say, aline drawn through the axis of the head and centrally through thebit-seat will divide the latter into two corresponding parts, the pointnearest the center of the head being farthest away from thedividing-line of the sections, while the point diametrically oppositethereto will be nearest to said dividing-line.

The numeral l2 designates the bit, consisting of two parts, the innerpart 13 being designed to cut a groove and the outer part 14 beingadapted to cut a molding adjacent to said groove so cut. These two partsare provided with bolt-holes for the passage of a holding-bolt l5,secured in place bya nut 16, and the inner part or section is formed inits outer face with a circular recess o1' socket 17, in which fits aboss 1S, formed on the inner These divided or two-part bits arepreferred when a wider groove is to be cut, the degree of eX- pansion ofthe head.- sections causing the groove adjustment, the bits beingcarried thereby to any width of groove to which said Sections areadjusted. Such adjustment of the said sections causes the relativepositions of the mold cut in the strip or material being worked aboveand below the groove to be disturbed or varied to the extent of the fullIOO space the groove is widened, and it will therefore be necessary toplace a Washer 19 in the socket or recess in the inner part or sectionof the bit of' a thickness equal to the distance the flanges have beenadj usted. When a plain-faced bit is used in connection with the grooving-bit, the washer need not be employed, because the face of the cutterbeing plain the Work of joining up the edge will be done by that part ofthe edge 'which is in line with the cut.

By sloping or inelining the bit-seats outwardly, as described, the bitsmaybe reversed and the head rotated in either direction and yet performits work.

Vhile I have shown the bit-seats formed in what are known as expandingcutterheads, they may be formed in solid l1eads,if desired. The bits mayalso be formed in a single piece instead of in sections, as described.

Having thus fully described my invention, what I claim is- 1. As animproved article, a cutter-head formed with a series of alternately andoppositely arranged recessed bit-seats, alternately inclined radially inopposite directions, the construction being such that a line drawnradially through the centers thereof will divide the same into twoportions symmetrically disposed to the plane of rotation, substantiallyas described.

2. The combination with a cu tter-head having a flange formed with aseries of alternately-arranged recessed bit-seats on opposite sides andsaid seats alternately inclined radially so that a line drawn throughthe center thereof radially will divide each seat into two portionssymmetrically disposed to the plane of rotation, of the circular bitsover--l lapping the center line of the cut and working in differentplanes beyond the limit of the flange, substantially as described.

3. In an expanding cutter-head for woodworking-machines, the combinationof the movable sections each formed with a liange provided withyoutwardly sloping or inclined and alternately-arranged recessedbit-seats in the outer faces, the construction being such that a linedrawn radially through the center of said seats will divide the sameinto two portions symmetrically disposed to the plane of rotation,substantially as described.

4. The combination with an expandin g cutter-head provided with a flangeformed with inclined bit-seats in the outer faces, of the circular bitsmade in two parts or sections formed respectively with a recess and aboss fitting therein and a single bolt holding said sections to theflanges, substantially as described.

5. In an expanding cutter-head for Woodworkin g-machines, thecombination with the movable sections each formed with a liange providedwith radially sloping or inclined and alternately-arran ged recessedbit-seats in the outer faces, and so constructed that a line drawnradially through the center of said seats will divide the same into twoportions symmetrically disposed to the plane of rotation, of thetwo-part bits formed in their adjoining faces with a socket or recessand a boss, respectively, and a single bolt holding said bits to theirseats, substantially as described.

6. As an improved article, a two-part circular bit for a rotarycutter-head comprising the grooving-section formed with a recess orsocket and the molding-section having a boss fitting in said recess orsocket and said sections adapted to be connected with a cutterhead by asingle bolt in such manner that the cutting edges of said sections workin different planes, substantially as described.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

SAMUEL J. SIIIMER. lVitnesses:

J oHN A. BECK, II. A. KERR.

